The population of the city was 1,517,550 people in 2000, in 2010 census it was up to 1,526.006 people. Philadelphia was the capital of the United States from 1790 to 1800. It was replaced by Washington, D.C. in 1800 after the White House was built.
Before Europeans came to the area, Philadelphia was home to the Lenape people. The first Europeans to come were the Dutch, who built towns and a fort in the area. The English took over the city in 1664. In 1681, Charles II of England gave a large piece of land to William Penn, to pay back some money he owed to Penn's father. William Penn had a dream of a land where people would be free to live and work no matter what religion they were. He built a city in the new land called Philadelphia.
Soon Philadelphia was the largest city in North America. The first library and the first hospital in the country were built in Philadelphia. Many ships sailed in and out of the city's port, and people came to the city to buy and sell all sorts of things.
One of the most famous people in Philadelphia was Benjamin Franklin. He started a newspaper and invented many things, such as bifocal glasses. He started a library that was free for everyone to use, and also a free hospital. He helped to write the Declaration of Independence and the United States Constitution.
In 1774, the Continental Congress met in Philadelphia to talk about their disputes with the United Kingdom. The British were not happy about this and soon a war began, called the American Revolutionary War. In 1776, the Americans again met in Philadelphia and signed the Declaration of Independence.
In 1777 George Washington lost the Battle of Germantown and Philadelphia was occupied by British troops. They left in 1778. After the war was won, a Constitutional Convention (United States) met in Philadelphia in 1787 to write the United States Constitution which states the most important laws of the United States.
Philadelphia is in the state of Pennsylvania, named after William Penn. It is on the west bank of the Delaware River, across from New Jersey. Another big river, the Schuylkill, flows into the Delaware River at Philadelphia. The city has only a few small hills, and most of it is flat. The summers are usually hot in Philadelphia and the winters are normal to cold.
Philadelphia has a large art museum, the Philadelphia Museum of Art. It also has some smaller museums of art, such as the Academy of Fine Arts, and the Barnes Foundation. The Franklin Institute is a science museum named after Benjamin Franklin. The Philadelphia Orchestra is famous for its concerts. Some famous jazz musicians, such as John Coltrane, came from Philadelphia. Most of the skyscrapers in downtown Philadelphia were designed by Louis Kahn.
Independence National Historic Park is in the oldest part of Philadelphia. Most of the buildings from the time when American was fighting for its freedom are there. Independence Hall is where the Declaration of Independence and the Constitution of the United States were written. Nearby is a building where the Liberty Bell is kept. In the same neighborhood, there are many houses dating from the days of the American Revolution. Elfreth's Alley is one of the oldest streets in the United States. Christ Church is the church where many famous early Americans worshipped.
- "Art & Artifacts: Discover the Library Company's Art and Artifact Collection – Athens of America". librarycompany.org. The Library Company of Philadelphia. Retrieved June 12, 2010.
- Robinson, Sam (November 5, 2013). "Behind Philadelphia Maneto: Dissecting The City Seal". Hidden City Philadelphia. Retrieved January 18, 2018.
- McDevitt, John (May 5, 2015). "Plaque Dedication Marks 120th Anniversary of Creation of Philadelphia’s Flag". philadelphia.cbslocal.com. CBS Broadcasting Inc. Retrieved January 18, 2018.
- "2017 U.S. Gazetteer Files". United States Census Bureau. Retrieved Mar 24, 2019.
- "Estimates of Resident Population Change and Rankings: July 1, 2016 to July 1, 2017 – United States – Metropolitan Statistical Area; and for Puerto Rico; 2017 Population Estimates". United States Census Bureau, Population Division. March 2018. Retrieved May 14, 2018.
- "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2017 – United States – Combined Statistical Area; and for Puerto Rico; 2017 Population Estimates". United States Census Bureau, Population Division. March 2018. Retrieved May 14, 2018.
- "QuickFacts Philadelphia County, Pennslvania". United States Census Bureau. Retrieved April 18, 2019.
- "Population and Housing Unit Estimates". Retrieved October 18, 2019.
- "US Board on Geographic Names". United States Geological Survey. February 2, 2015. Retrieved January 31, 2008.